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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

64/RN
4/RN
16/RN
1/RN

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Hydraulics and Fluid Mechanics in ME
The losses are more in

critical flow
laminar flow
turbulent flow
transition flow

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Hydraulics and Fluid Mechanics in ME
Francis turbine is best suited for

All types of heads
High head installation above 180 m
Medium head application from 24 to 180 m
Low head installation up to 30 m

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Hydraulics and Fluid Mechanics in ME
Property of a fluid by which its own molecules are attracted is called

viscosity
adhesion
compressibility
cohesion

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Hydraulics and Fluid Mechanics in ME
If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

7.141 H5/2
0.417 H5/2
4.171 H5/2
1.417 H5/2

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kg-sec-V-m⁴ for water at 0°C is

100.9
1
1000
101.9

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